The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 705
Hash: 66239632cffeee6bd4368ec9c7be96c9caabcf3b6f38111ea3456d7e8f9b957b
Previous block: 4cbdebff741d9a3a0be0e1d611e4e470561c4c2ea9d0fcd71cb1b13d0c29f40e
Next block: 03e714949d1c6827114613846dfe645699ca6f892608ee88b43f97d8b15b319a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864261
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: b38d540b658b712dfc5af6488743fcb288b60d091034ee0db981b0000347bedf
Median time: 1701864260
Difficulty: 4.656542373906925e-10
Confirmations: 1539
Chainwork: 0000000000000000000000000000000000000000000000000000000000000584
Bits: 207fffff